※ 引述《huggie (huggie)》之铭言： : 什麽是 expression, 什麽是 statement? : 应该有分这两种, 写了很久的python了 还是没弄懂 : http://norvig.com/python-iaq.html : Java and C++ have the ternary conditional operator (test ? result : : alternative). Python has resisted this, but in the upcoming Python 2.5 it : will allow expressions of the form (result if test else alternative). This : undermines Python's clear distinction between expressions and statements, but : it is a compromise that many people have asked for. : "distinction between expression and statements" 不懂他什麽意思 http://java.sun.com/docs/books/tutorial/java/nutsandbolts/expressions.html statement 是由一些 expression 组成, 主词 受词 都算是 expression, 完整的一句话就算是 statement s = 2 + 1; //"s", "2+1" 是 expression, statement 则是 "s = 2+1;" test? result:alternative 他认为有点模糊化了这两个关系 a = (i>10? 10:i); // 你觉得 i>10?10:i 算是 statement 还是 expression // 从语意上来看 他已经具有一句话的功能 甚至超越了=>statement // 但是从功能上来看 他就是一种计算 像是 2+1 =>expression // 以上两句是我猜的 = =" --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.113.128.52